Acidproof brick

The aluminum chloride type of chamber is normally lined with acidproof brick with catalyst addition at the top and a baffle to direct the flow of catalyst to the reaction zone in the bottom. The charge enters at the bottom, and the effluent leaves from the middle or top. 

McDowell, 6., Specifications for Acidproof Brick, Chem. Eng., 100-104 (June 10, 1974). 

These may be of wood, metal, chemical stoneware, acidproof brick, glass, plastic, plastic- or glass-lined metal, or other material depending upon the corrosion conditions. For ease of construction and strength they are usually circular in cross section. 

Brick Construction Brick-lined construction can be used for many severely corrosive conditions under which high alloys would fail. Common bricks are made from carbon, red shale, or acidproof refractory materials. Red-shale brick is not used above 175°C (350°F) because of spalhng. Acidproof refractories can be used up to 870°C (1,600°F). 

Brick-lined construction can be used for many severely corrosive conditions, where high alloys would fail. Acidproof refractories can be used up to 900°C. 

The National Association of Corrosion Engineers (NACE), Houston, Texas with emphasis on NACE Technical Committees such as Unit Committee T-6K on Corrosion Resistant Construction With Masonry and Allied Materials. The first two reports issued by NACE T-6K were (1) Acidproof Vessel Construction With Membrane and Brick Linings, and (2) Acidproof Floor Construction With Membrane and Brick. 

If a thermal difference will exist between the CRM lining and the shell and expansion joints are not provided in the lining, then NACE Publication 6K157 "Acidproof Vessel Construction With Membrane and Brick" suggests using the... 

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